apply the patches

apps/server/src/routes/worktree/index.ts

@@ -49,6 +49,7 @@ import {
   createRunInitScriptHandler,
 } from './routes/init-script.js';
 import { createDiscardChangesHandler } from './routes/discard-changes.js';
+import { createListRemotesHandler } from './routes/list-remotes.js';
 import type { SettingsService } from '../../services/settings-service.js';
 
 export function createWorktreeRoutes(
@@ -157,5 +158,13 @@ export function createWorktreeRoutes(
     createDiscardChangesHandler()
   );
 
+  // List remotes route
+  router.post(
+    '/list-remotes',
+    validatePathParams('worktreePath'),
+    requireValidWorktree,
+    createListRemotesHandler()
+  );
+
   return router;
 }

apps/server/src/routes/worktree/routes/list-branches.ts

@@ -110,9 +110,10 @@ export function createListBranchesHandler() {
         }
       }
 
-      // Get ahead/behind count for current branch
+      // Get ahead/behind count for current branch and check if remote branch exists
       let aheadCount = 0;
       let behindCount = 0;
+      let hasRemoteBranch = false;
       try {
         // First check if there's a remote tracking branch
         const { stdout: upstreamOutput } = await execAsync(
@@ -121,6 +122,7 @@ export function createListBranchesHandler() {
         );
 
         if (upstreamOutput.trim()) {
+          hasRemoteBranch = true;
           const { stdout: aheadBehindOutput } = await execAsync(
             `git rev-list --left-right --count ${currentBranch}@{upstream}...HEAD`,
             { cwd: worktreePath }
@@ -130,7 +132,18 @@ export function createListBranchesHandler() {
           behindCount = behind || 0;
         }
       } catch {
-        // No upstream branch set, that's okay
+        // No upstream branch set - check if the branch exists on any remote
+        try {
+          // Check if there's a matching branch on origin (most common remote)
+          const { stdout: remoteBranchOutput } = await execAsync(
+            `git ls-remote --heads origin ${currentBranch}`,
+            { cwd: worktreePath, timeout: 5000 }
+          );
+          hasRemoteBranch = remoteBranchOutput.trim().length > 0;
+        } catch {
+          // No remote branch found or origin doesn't exist
+          hasRemoteBranch = false;
+        }
       }
 
       res.json({
@@ -140,6 +153,7 @@ export function createListBranchesHandler() {
           branches,
           aheadCount,
           behindCount,
+          hasRemoteBranch,
         },
       });
     } catch (error) {

apps/server/src/routes/worktree/routes/list-remotes.ts

@@ -0,0 +1,127 @@
+/**
+ * POST /list-remotes endpoint - List all remotes and their branches
+ *
+ * Note: Git repository validation (isGitRepo, hasCommits) is handled by
+ * the requireValidWorktree middleware in index.ts
+ */
+
+import type { Request, Response } from 'express';
+import { exec } from 'child_process';
+import { promisify } from 'util';
+import { getErrorMessage, logWorktreeError } from '../common.js';
+
+const execAsync = promisify(exec);
+
+interface RemoteBranch {
+  name: string;
+  fullRef: string;
+}
+
+interface RemoteInfo {
+  name: string;
+  url: string;
+  branches: RemoteBranch[];
+}
+
+export function createListRemotesHandler() {
+  return async (req: Request, res: Response): Promise<void> => {
+    try {
+      const { worktreePath } = req.body as {
+        worktreePath: string;
+      };
+
+      if (!worktreePath) {
+        res.status(400).json({
+          success: false,
+          error: 'worktreePath required',
+        });
+        return;
+      }
+
+      // Get list of remotes
+      const { stdout: remotesOutput } = await execAsync('git remote -v', {
+        cwd: worktreePath,
+      });
+
+      // Parse remotes (each remote appears twice - once for fetch, once for push)
+      const remotesSet = new Map<string, string>();
+      remotesOutput
+        .trim()
+        .split('\n')
+        .filter((line) => line.trim())
+        .forEach((line) => {
+          const match = line.match(/^(\S+)\s+(\S+)\s+\(fetch\)$/);
+          if (match) {
+            remotesSet.set(match[1], match[2]);
+          }
+        });
+
+      // Fetch latest from all remotes (silently, don't fail if offline)
+      try {
+        await execAsync('git fetch --all --quiet', {
+          cwd: worktreePath,
+          timeout: 15000, // 15 second timeout
+        });
+      } catch {
+        // Ignore fetch errors - we'll use cached remote refs
+      }
+
+      // Get all remote branches
+      const { stdout: remoteBranchesOutput } = await execAsync(
+        'git branch -r --format="%(refname:short)"',
+        { cwd: worktreePath }
+      );
+
+      // Group branches by remote
+      const remotesBranches = new Map<string, RemoteBranch[]>();
+      remotesSet.forEach((_, remoteName) => {
+        remotesBranches.set(remoteName, []);
+      });
+
+      remoteBranchesOutput
+        .trim()
+        .split('\n')
+        .filter((line) => line.trim())
+        .forEach((line) => {
+          const cleanLine = line.trim().replace(/^['"]|['"]$/g, '');
+          // Skip HEAD pointers like "origin/HEAD"
+          if (cleanLine.includes('/HEAD')) return;
+
+          // Parse remote name from branch ref (e.g., "origin/main" -> "origin")
+          const slashIndex = cleanLine.indexOf('/');
+          if (slashIndex === -1) return;
+
+          const remoteName = cleanLine.substring(0, slashIndex);
+          const branchName = cleanLine.substring(slashIndex + 1);
+
+          if (remotesBranches.has(remoteName)) {
+            remotesBranches.get(remoteName)!.push({
+              name: branchName,
+              fullRef: cleanLine,
+            });
+          }
+        });
+
+      // Build final result
+      const remotes: RemoteInfo[] = [];
+      remotesSet.forEach((url, name) => {
+        remotes.push({
+          name,
+          url,
+          branches: remotesBranches.get(name) || [],
+        });
+      });
+
+      res.json({
+        success: true,
+        result: {
+          remotes,
+        },
+      });
+    } catch (error) {
+      const worktreePath = req.body?.worktreePath;
+      logWorktreeError(error, 'List remotes failed', worktreePath);
+      res.status(500).json({ success: false, error: getErrorMessage(error) });
+    }
+  };
+}

apps/server/src/routes/worktree/routes/merge.ts

@@ -1,5 +1,7 @@
 /**
- * POST /merge endpoint - Merge feature (merge worktree branch into main)
+ * POST /merge endpoint - Merge feature (merge worktree branch into a target branch)
+ *
+ * Allows merging a worktree branch into any target branch (defaults to 'main').
  *
  * Note: Git repository validation (isGitRepo, hasCommits) is handled by
  * the requireValidProject middleware in index.ts
@@ -8,18 +10,21 @@
 import type { Request, Response } from 'express';
 import { exec } from 'child_process';
 import { promisify } from 'util';
-import { getErrorMessage, logError } from '../common.js';
+import { getErrorMessage, logError, isValidBranchName, execGitCommand } from '../common.js';
+import { createLogger } from '@automaker/utils';
 
 const execAsync = promisify(exec);
+const logger = createLogger('Worktree');
 
 export function createMergeHandler() {
   return async (req: Request, res: Response): Promise<void> => {
     try {
-      const { projectPath, branchName, worktreePath, options } = req.body as {
+      const { projectPath, branchName, worktreePath, targetBranch, options } = req.body as {
         projectPath: string;
         branchName: string;
         worktreePath: string;
-        options?: { squash?: boolean; message?: string };
+        targetBranch?: string; // Branch to merge into (defaults to 'main')
+        options?: { squash?: boolean; message?: string; deleteWorktreeAndBranch?: boolean };
       };
 
       if (!projectPath || !branchName || !worktreePath) {
@@ -30,7 +35,10 @@ export function createMergeHandler() {
         return;
       }
 
-      // Validate branch exists
+      // Determine the target branch (default to 'main')
+      const mergeTo = targetBranch || 'main';
+
+      // Validate source branch exists
       try {
         await execAsync(`git rev-parse --verify ${branchName}`, { cwd: projectPath });
       } catch {
@@ -41,12 +49,44 @@ export function createMergeHandler() {
         return;
       }
 
-      // Merge the feature branch
+      // Validate target branch exists
+      try {
+        await execAsync(`git rev-parse --verify ${mergeTo}`, { cwd: projectPath });
+      } catch {
+        res.status(400).json({
+          success: false,
+          error: `Target branch "${mergeTo}" does not exist`,
+        });
+        return;
+      }
+
+      // Merge the feature branch into the target branch
       const mergeCmd = options?.squash
         ? `git merge --squash ${branchName}`
-        : `git merge ${branchName} -m "${options?.message || `Merge ${branchName}`}"`;
+        : `git merge ${branchName} -m "${options?.message || `Merge ${branchName} into ${mergeTo}`}"`;
 
-      await execAsync(mergeCmd, { cwd: projectPath });
+      try {
+        await execAsync(mergeCmd, { cwd: projectPath });
+      } catch (mergeError: unknown) {
+        // Check if this is a merge conflict
+        const err = mergeError as { stdout?: string; stderr?: string; message?: string };
+        const output = `${err.stdout || ''} ${err.stderr || ''} ${err.message || ''}`;
+        const hasConflicts =
+          output.includes('CONFLICT') || output.includes('Automatic merge failed');
+
+        if (hasConflicts) {
+          // Return conflict-specific error message that frontend can detect
+          res.status(409).json({
+            success: false,
+            error: `Merge CONFLICT: Automatic merge of "${branchName}" into "${mergeTo}" failed. Please resolve conflicts manually.`,
+            hasConflicts: true,
+          });
+          return;
+        }
+
+        // Re-throw non-conflict errors to be handled by outer catch
+        throw mergeError;
+      }
 
       // If squash merge, need to commit
       if (options?.squash) {
@@ -55,17 +95,46 @@ export function createMergeHandler() {
         });
       }
 
-      // Clean up worktree and branch
-      try {
-        await execAsync(`git worktree remove "${worktreePath}" --force`, {
-          cwd: projectPath,
-        });
-        await execAsync(`git branch -D ${branchName}`, { cwd: projectPath });
-      } catch {
-        // Cleanup errors are non-fatal
+      // Optionally delete the worktree and branch after merging
+      let worktreeDeleted = false;
+      let branchDeleted = false;
+
+      if (options?.deleteWorktreeAndBranch) {
+        // Remove the worktree
+        try {
+          await execGitCommand(['worktree', 'remove', worktreePath, '--force'], projectPath);
+          worktreeDeleted = true;
+        } catch {
+          // Try with prune if remove fails
+          try {
+            await execGitCommand(['worktree', 'prune'], projectPath);
+            worktreeDeleted = true;
+          } catch {
+            logger.warn(`Failed to remove worktree: ${worktreePath}`);
+          }
+        }
+
+        // Delete the branch (but not main/master)
+        if (branchName !== 'main' && branchName !== 'master') {
+          if (!isValidBranchName(branchName)) {
+            logger.warn(`Invalid branch name detected, skipping deletion: ${branchName}`);
+          } else {
+            try {
+              await execGitCommand(['branch', '-D', branchName], projectPath);
+              branchDeleted = true;
+            } catch {
+              logger.warn(`Failed to delete branch: ${branchName}`);
+            }
+          }
+        }
       }
 
-      res.json({ success: true, mergedBranch: branchName });
+      res.json({
+        success: true,
+        mergedBranch: branchName,
+        targetBranch: mergeTo,
+        deleted: options?.deleteWorktreeAndBranch ? { worktreeDeleted, branchDeleted } : undefined,
+      });
     } catch (error) {
       logError(error, 'Merge worktree failed');
       res.status(500).json({ success: false, error: getErrorMessage(error) });

apps/server/src/routes/worktree/routes/push.ts

@@ -15,9 +15,10 @@ const execAsync = promisify(exec);
 export function createPushHandler() {
   return async (req: Request, res: Response): Promise<void> => {
     try {
-      const { worktreePath, force } = req.body as {
+      const { worktreePath, force, remote } = req.body as {
         worktreePath: string;
         force?: boolean;
+        remote?: string;
       };
 
       if (!worktreePath) {
@@ -34,15 +35,18 @@ export function createPushHandler() {
       });
       const branchName = branchOutput.trim();
 
+      // Use specified remote or default to 'origin'
+      const targetRemote = remote || 'origin';
+
       // Push the branch
       const forceFlag = force ? '--force' : '';
       try {
-        await execAsync(`git push -u origin ${branchName} ${forceFlag}`, {
+        await execAsync(`git push -u ${targetRemote} ${branchName} ${forceFlag}`, {
           cwd: worktreePath,
         });
       } catch {
         // Try setting upstream
-        await execAsync(`git push --set-upstream origin ${branchName} ${forceFlag}`, {
+        await execAsync(`git push --set-upstream ${targetRemote} ${branchName} ${forceFlag}`, {
           cwd: worktreePath,
         });
       }
@@ -52,7 +56,7 @@ export function createPushHandler() {
         result: {
           branch: branchName,
           pushed: true,
-          message: `Successfully pushed ${branchName} to origin`,
+          message: `Successfully pushed ${branchName} to ${targetRemote}`,
         },
       });
     } catch (error) {